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(A) In $(i)$ Hydrogenation,an alkene or alkyne is converted to an alkane without changing the number of carbon atoms.In $(ii)$ Alkyl halide reduction

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$(i)$ and $(ii)$

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(A) In $(i)$ Hydrogenation,an alkene or alkyne is converted to an alkane without changing the number of carbon atoms.In $(ii)$ Alkyl halide reduction $(R-X + 2[H] \rightarrow R-H + HX)$,the number of carbon atoms remains the same.In $(iii)$ Wurtz reaction,the number of carbon atoms doubles.In $(iv)$ Decarboxylation $(R-COONa + NaOH \rightarrow R-H + Na_2CO_3)$,the number of carbon atoms decreases by $1$.In $(v)$ Kolbe reaction,the number of carbon atoms in the product is $2n-2$ (where $n$ is the number of carbons in the acid salt).Therefore,the carbon number does not change in $(i)$ and $(ii)$.

In which of the following reactions does the carbon number not change on product formation?
$(i)$ Hydrogenation
$(ii)$ Alkyl halide reduction
$(iii)$ Wurtz reaction
$(iv)$ Decarboxylation
$(v)$ Kolbe reaction

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In which of the following reactions does the carbon number not change on product formation?$(i)$ Hydrogenation$(ii)$ Alkyl halide reduction$(iii)$ Wurtz reaction$(iv)$ Decarboxylation$(v)$ Kolbe reaction